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   <meta name="Author" content="Matthias L. Jugel, Marcus Meissner">
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   <meta name="Description" content="Java Telnet Applet is a fully features Telnet and Terminal Emulation implementation for Java.">
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   <title>JTA - Telnet/SSH for the JAVA(tm) platform v2.0: SSH Plugin</title>
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<font face="Arial,Helvetica"><font color="#000099">
JTA - Telnet/SSH for the JAVA(tm) platform: SSH Plugin</font></font></h1></div>
<i>&copy; 1996-2000 <a href="mailto:leo@mud.de">Matthias L. Jugel </a>and
<a href="mailto:marcus@mud.de">Marcus
Mei&szlig;ner</a></i>
<p><b>Version 2.0 / Java 2 and 1.1.x</b>
<br>Available under <a href="../../license/COPYING">GNU General Public License</a></td>
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<h2>
<font color="#CC0000">Secure Shell Plugin</font></h2></center>
Today it is advicable to use <b>secure communications</b> as public networks,
like the Internet are not secure. The secure shell (SSH) plugin provides
an easy to use, but secure way to log into a remote host. To use this plugin
make sure your remote host has a secure shell server running. It may be
used as a replacement for the <a href="Telnet.html">Telnet</a> plugin,
which does no encryption!
<p>This implementation of SSH provides IDEA, Blowfish and RSA/PKCS#1 encryption
and was originally written in 1998 by
<a href="mailto:javassh@france-mail.com">Cedric
Gourio</a>. He used a part of the old Java Telnet Applet to write his <a href="http://www.cl.cam.ac.uk/~fapp2/software/java-ssh/">Java
SSH</a> client and so the code was similar to our old applet.
<p>There are other implementations of ssh for Java available, but those
packages implement the whole ssh protocol and all features which makes
the packages very big. We tried to keep our implementation to a minimum
for easier download.
<p>You can configure the plugin using the following properties:
<br><i><font color="#CC0000">(there will be configurable parts, but these
are not yet implemented!)</font></i>
<p><b>Security Note</b>:&nbsp;
<p>The applet is suspectible to the man-in-the-middle attacks published
by <a href="http://www.securityportal.com/cover/coverstory20001218.html">Security
Portal</a>. We cannot avoid this. We can't even use the RSA&nbsp;based
host authorization, since the applet itself is downloaded from the remote
host, may not keep local state and might be modified by the man-in-the-middle.
<p>The only way to guard against applet modification would be having it
signed with a trust certificate. This is too expensive both money- and
timewise for us.
<p>So there is encryption, but it only guards against <i>normal</i> packetsniffing
attacks.
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<td ALIGN=LEFT VALIGN=TOP BGCOLOR="#CCCCCC" NOSAVE><font color="#CC0000">Additional
Programmer Documentation is available:</font>
<br>&nbsp;
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<td BGCOLOR="#FFFFFF" NOSAVE><b><font face="Arial,Helvetica"><font color="#000000"><a href="../source/de/mud/jta/plugin/SSH.html">de.mud.jta.plugin.SSH</a></font></font></b></td>
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<td>This is the programmer documentation for the plugin. Use it as an example
if you want to write your own back end plugins.</td>
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<td BGCOLOR="#FFFFFF" NOSAVE><b><font face="Arial,Helvetica"><a href="../source/de/mud/jta/event/package-summary.html">de.mud.jta.event</a></font></b></td>
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<td>This plugins uses some of the events and listeners described here.</td>
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<td NOSAVE>Copyright 1996-2000 <a href="mailto:leo@mud.de">Matthias L.
Jugel</a>, <a href="mailto:marcus@mud.de">Marcus Mei&szlig;ner</a></td>

<td>
<div align=right><b><i>Get the <a href="http://www.mud.de/se/jta">latest
version here</a>!</i></b></div>
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<div align=right>$Id: SSH.html 500 2005-10-07 09:15:07Z leo $</div>
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